Triterpenes and the Antimycobacterial Activity of Duroia macrophylla Huber (Rubiaceae)

Table 1

¹H and ¹³C NMR chemical shifts (𝛿, ppm) data of oleanolic and ursolic acids (400 MHz, CDCl₃).

Position	Oleanolic acid			Ursolic acid
	𝛿C	𝛿H (multiplicity)	𝛿C Literature [7]	𝛿C	𝛿H (multiplicity)	𝛿C Literature [7]
1	38.5	1.63 (m)	39.0	38.6	1.72 (m)	39.2
2	28.1	1.60 (m)	28.1	28.2	1.60 (m)	28.2
3	79.1	3.23 (dd; 𝐽=10.7; 4.7 Hz)	78.2	78.7	3.22 (dd; 𝐽=10.8; 4.9 Hz)	78.2
4	38.8	—	39.4	38.5	—	39.6
5	55.3	0.74 (m)	55.9	55.2	1.34 (m)	55.9
6	18.8	1.54 (m)	18.8	18.3	1.60 (m)	18.8
7	32.7	1.49 (m)	33.4	32.9	1.72 (m)	33.7
8	39.3	—	39.8	39.5	—	40.1
9	47.6	1.54 (m)	48.2	47.3	1.60 (m)	48.1
10	37.0	—	37.4	37.0	—	37.5
11	23.8	0.94 (m)	23.8	23.7	1.91 (m)	23.7
12	122.8	5.31 (dd; 𝐽=3.6; 3.5 Hz)	122.6	125.9	5.27 (dd; 𝐽=3.6; 3.5 Hz)	125.7
13	143.5	—	144.8	137.9	—	139.3
14	41.5	—	42.2	42.0	—	42.6
15	27.7	1.60 (m)	28.4	28.1	1.60 (m)	28.8
16	23.7	0.94 (m)	23.8	25.0	1.34 (m)	25.0
17	46.7	—	46.7	48.1	—	48.1
18	42.1	2.82 (m)	42.1	53.8	2.2 (m)	53.6
19	46.0	2.87 (m)	46.6	38.5	1.00 (m)	39.5
20	31.0	—	31.0	38.5	0.95 (m)	39.4
21	33.9	1.62 (m)	34.3	30.3	1.27 (m)	31.1
22	33.2	1.30 (m)	33.2	37.4	1.72 (m)	37.4
23	28.0	1.00 (s)	28.8	28.9	1.00 (s)	28.8
24	16.8	0.79 (s)	16.5	15.6	0.79 (s)	16.5
25	15.3	0.93 (s)	15.6	15.4	0.94 (s)	15.7
26	17.1	0.79 (s)	17.5	17.1	0.82 (s)	17.5
27	26.0	1.16 (s)	26.2	23.5	1.10 (s)	24.0
28	180.0	—	180.0	179.6	—	179.7
29	33.1	0.92 (s)	33.4	17.0	0.87 (d; 𝐽=6.4 Hz)	17.5
30	23.7	0.94 (s)	23.8	21.4	0.97 (d; 𝐽=6.3 Hz)	21.4